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Microchip Technology SMBG5369AE3/TR13
- Part No.:
- SMBG5369AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG5369AE3/TR13.pdf
- Description:
- DIODE ZENER 51V 5W DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,058
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Product details
Overview
SMBG5369AE3/TR13 from Microsemi is a surface-mount 5 W Zener diode with nominal Zener voltage of 51 V, ±10% tolerance (A suffix), 25 Ω dynamic impedance at 25 mA test current, and DO-215AA gull-wing package. It regulates voltage across wide current/temperature ranges and withstands high surge stresses in power supply and protection circuits.
For engineers reviewing the SMBG5369AE3/TR13 datasheet, SMBG5369AE3/TR13 pinout, SMBG5369AE3/TR13 application, or SMBG5369AE3/TR13 equivalent, key selection criteria include Zener voltage accuracy, surge current rating (230 A), thermal resistance (25 °C/W junction-to-lead), and RoHS-compliant matte-tin plating for lead-free assembly.
Technical Context
This device operates as a voltage reference and overvoltage clamp by maintaining stable reverse breakdown at 51 V under regulated current (IZT = 25 mA). Its low dynamic impedance (27 Ω) ensures minimal voltage variation with load changes, while the DO-215AA gull-wing package enables visible solder joints and Level 1 moisture sensitivity handling without dry pack.
The SMBG5369AE3/TR13 supports high-reliability operation from –65 °C to +150 °C junction temperature, dissipates 5.0 W at TL < 25 °C, and delivers 230 A non-repetitive surge current (8.3 ms half-sine) - critical for transient suppression in industrial power rails and DC-DC converter feedback paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 51 V ±10% - defines precise clamping threshold for overvoltage protection at nominal 25 mA bias. |
| Test Current (IZT) | 25 mA - operating point where VZ and dynamic impedance are specified; sets minimum regulation current. |
| Dynamic Impedance (ZZT) | 27 Ω - small-signal AC resistance in breakdown; determines voltage stability under varying load current. |
| Max Surge Current (IZSM) | 230 A (8.3 ms half-sine) - peak non-repetitive current it can absorb without failure during transients. |
| Thermal Resistance (RθJL) | 25 °C/W - enables efficient heat transfer from junction to lead; supports 5 W dissipation with adequate PCB copper. |
| Reverse Leakage (IR) | 0.5 µA @ 40.8 V - ultra-low leakage below knee voltage ensures minimal standby power loss. |
| Junction Temp Range | –65 °C to +150 °C - validated for extended industrial and automotive under-hood environments. |
Pinout & Package
DO-215AA gull-wing surface-mount package with cathode band marking; terminals are anode and cathode only - no internal connections beyond the two leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Breakdown terminal | Positive voltage reference node; connects to regulated rail or clamping point in circuit. |
| Anode | Reference return | Ground or low-side reference; polarity must be observed to avoid forward conduction. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N5369B equivalent | Identical electrical specs and testing - enables drop-in replacement for legacy through-hole designs using adapter footprints. |
| RoHS-compliant matte-tin plating | Lead-free solder compatibility per J-STD-020B Level 1 - eliminates dry-pack requirement and supports automated reflow. |
| Visible gull-wing solder joints | Optical inspection enabled on production line - improves process yield and field reliability verification. |
| High surge current capability | 230 A peak (8.3 ms) - protects downstream ICs from lightning-induced or inductive-switching transients. |
| Stable voltage vs. current | Low ZZT = 27 Ω and minimal VZ drift - maintains regulation accuracy across 10–100 mA operating range. |
Applications
| Industrial Power Supply Regulation | Automotive ECU Transient Protection |
|---|---|
Use Scenario: Stabilizes 51 V reference in isolated DC-DC converter feedback loop for telecom power modules. IC Role / Device Role / Timing Role: Voltage reference and error amplifier bias source - sets output voltage precision and loop stability. Use Value: ±10% VZ tolerance and 27 Ω ZZT ensure <±1.5% output regulation over line/load/temperature. | Use Scenario: Clamps load-dump transients on 24 V battery-fed engine control unit inputs. IC Role / Device Role / Timing Role: Overvoltage protector - shunts surge energy before it reaches microcontroller I/O pins. Use Value: 230 A IZSM rating absorbs ISO 7637-2 Pulse 5a without degradation, extending ECU lifetime. |
| LED Driver Current Sensing | Programmable Voltage Reference |
Use Scenario: Provides stable 51 V bias for high-side current sense amplifier in constant-current LED driver. IC Role / Device Role / Timing Role: Precision reference node - establishes known voltage for differential sensing across shunt resistor. Use Value: Low 0.5 µA IR at 40.8 V minimizes error contribution in millivolt-level current measurement. | Use Scenario: Serves as adjustable reference input for programmable logic controller (PLC) analog input module. IC Role / Device Role / Timing Role: Calibration reference - enables traceable 51 V setpoint for DAC-based voltage generation. Use Value: Moisture Level 1 rating and –65 °C to +150 °C operation support long-term calibration stability in factory-floor environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5369B | Through-hole DO-41 package; identical VZ, IZT, ZZT, and IZSM; non-RoHS tin-lead plating. | Requires axial-leaded footprint; not suitable for high-density SMT lines. | Select when legacy board repair or manual prototyping demands through-hole mounting. |
| SMBG5369BE3/TR13 | Same DO-215AA package and electrical specs, but ±5% VZ tolerance (B suffix) instead of ±10% (A suffix). | Higher voltage accuracy needed for precision references; tighter tolerance increases cost and reduces availability. | Select when system-level VZ drift budget requires <±0.5 V deviation at 51 V. |
Compared with SMBG5369AE3/TR13, 1N5369B offers identical regulation performance but mandates through-hole assembly, while SMBG5369BE3/TR13 trades wider tolerance for improved voltage accuracy - both require layout adaptation or BOM revision for substitution.
Availability
SMBG5369AE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive ECUs, and LED driver designs requiring stable component supply, RoHS compliance, and high-surge transient immunity.
Supply support for SMBG5369AE3/TR13 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microsemi Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The SMBG53xxB series was designed specifically for surface-mount voltage regulation and transient suppression in space-constrained, high-stress power systems - emphasizing robust surge handling, moisture resilience, and JEDEC-compatibility.
FAQ
What is the Zener voltage tolerance of SMBG5369AE3/TR13?
The SMBG5369AE3/TR13 has a Zener voltage tolerance of ±10%, indicated by the "A" suffix in its part number. This means its actual breakdown voltage falls between 45.9 V and 56.1 V at the specified test current of 25 mA, as confirmed in the Electrical Characteristics table on page 3 of the T4-LDS-0246-1 datasheet.
Does SMBG5369AE3/TR13 require dry packing before reflow soldering?
No, SMBG5369AE3/TR13 does not require dry packing. Its moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1, meaning it can be stored indefinitely at ambient conditions (<30 °C / 60% RH) and processed directly through standard reflow profiles without baking - a benefit of its void-free epoxy encapsulation.
What is the maximum continuous power dissipation for SMBG5369AE3/TR13?
The SMBG5369AE3/TR13 is rated for 5.0 W continuous power dissipation at lead temperature (TL) below 25 °C. When mounted on an FR4 PCB with recommended footprint, its derated power drops to 1.38 W at 25 °C ambient due to RθJA = 90 °C/W, as specified in the Maximum Ratings table on page 1.
How is polarity marked on SMBG5369AE3/TR13?
SMBG5369AE3/TR13 uses a cathode band marking on the body - the banded end is the cathode and must be connected to the more positive potential in the circuit. This polarity is critical: reverse orientation causes forward conduction at ~1.2 V, disabling regulation and risking thermal overload.
Is SMBG5369AE3/TR13 compatible with lead-free reflow processes?
Yes, SMBG5369AE3/TR13 features RoHS-compliant annealed matte-tin plating (denoted by "e3") and is qualified for lead-free reflow up to 260 °C for 10 seconds, per MIL-STD-750 Method 2026. Its solderability and thermal robustness are verified for standard Pb-free SAC305 profiles.
SMBG5369AE3/TR13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-215AA, SMB Gull Wing
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 51 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 27 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 36.7 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 1 A
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG5369AE3/TR13 FAQ
1.How can I place an order for SMBG5369AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG5369AE3/TR13 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SMBG5369AE3/TR13 reliable?
The price and inventory of SMBG5369AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG5369AE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMBG5369AE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG5369AE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG5369AE3/TR13?
SMBG5369AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG5369AE3/TR13 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SMBG5369AE3/TR13?
For technical support, including SMBG5369AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG5369AE3/TR13 requirements.
6.How does Aetrix verify that SMBG5369AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMBG5369AE3/TR13 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMBG5369AE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMBG5369AE3/TR13?
All SMBG5369AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG5369AE3/TR13, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SMBG5369AE3/TR13 part is unused and in its original packaging.
Return procedure for SMBG5369AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG5369AE3/TR13 Tags
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BZX84C3V3LT1G
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MM5Z5V1ST1G
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